Which states have the most electric vehicles? Map shows cleaner cars are rolling out in a patchwork of states

Battery powered cars are steadily rolling out across America’s roads, but only in a patchwork of states. In California, Washington and Hawaii more than three out of every 1,000 vehicles are now electric. But in most of the country the cleaner cars are barely a blip on the radar screen, according to a new map by the U.S. Energy Information Administration, a federal statistics agency.

The data reflect the uneven landscape of state-based subsidies for pure-electric cars, such as the Nissan Leaf, and plug-in hybrids like the Chevy Volt that come with backup gasoline tanks. In California, drivers can receive rebates of up to €2,000 ($2,500) for a Leaf and €1,200 ($1,500) for a Volt. That's on top of an existing federal tax credit of as much as €6,000 ($7,500). In Georgia, would-be buyers can snag an extra tax credit of up to €4,000 ($5,000) for “zero emissions vehicles,” a category that includes both electric and hydrogen-powered cars.